Synopsis

Description

The socketpair() library call creates an unnamed pair of connected sockets in
the specified address family domain, of the specified type, that uses the
optionally specified protocol. The descriptors that are used in referencing the new
sockets are returned in sv[0] and sv[1]. The two sockets are indistinguishable.

Return Values

socketpair() returns -1 on failure and 0 on success.

Errors

The call succeeds unless:

EAFNOSUPPORT

The specified address family is not supported on this machine.

EMFILE

Too many descriptors are in use by this process.

ENOMEM

There was insufficient user memory for the operation to complete.

ENOSR

There were insufficient STREAMS resources for the operation to complete.